Amphiphilic acetylacetone-based carbon dots
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F24%3A10254867" target="_blank" >RIV/61989100:27740/24:10254867 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2024/tc/d3tc04675c" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/tc/d3tc04675c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d3tc04675c" target="_blank" >10.1039/d3tc04675c</a>
Alternative languages
Result language
angličtina
Original language name
Amphiphilic acetylacetone-based carbon dots
Original language description
The ongoing development of carbon dots (CDs) for different applications calls for researching novel methods for their synthesis and surface functionalization. For the fabrication of photonic devices, apart from the obvious requirement of bright luminescence, CDs also should be soluble in the non-polar solvents used for the ink-printing of their functional layers. Herein, we introduce amphiphilic CDs synthesized from a mixture of benzoic acid and ethylenediamine in acetylacetone, which satisfy both of the abovementioned requirements. These CDs are quasi-spherical nanoparticles that are 20-50 nm in size, with aliphatic, carbonyl, amide, imine, and carbamate groups at the surface. This wide spectrum of surface groups renders them amphiphilic and soluble in a variety of substances, such as toluene, chloroform, alcohol, and water, with relative polarity ranging from 0.002 to 1. By variation of the molar ratio of benzoic acid and ethylenediamine, the highest quantum yield reported so far of 36% in isopropanol is achieved for the amphiphilic CDs. As a demonstration of the use of developed amphiphilic CDs in LEDs, green-emitting charge-injection devices were fabricated with a broad emission band centered at 515 nm, maximal luminance of 1716 cd m-2, and CCT of 5627 K. These LEDs are the first ones based on amphiphilic CDs. Furthermore, these CDs can be used as luminescent inks and as an active material for solar concentrators. The use of acetylacetone in combination with benzoic acid and ethylenediamine led to amphiphilic carbon dots formation with bright blue emission, which allowed us to produce LEDs, luminescent inks, and films for solar concentrators.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
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Continuities
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Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Materials Chemistry C
ISSN
2050-7526
e-ISSN
2050-7534
Volume of the periodical
12
Issue of the periodical within the volume
11
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
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UT code for WoS article
001169415000001
EID of the result in the Scopus database
2-s2.0-85186214436